How to install the latest version of Blender in Ubuntu, instead of the old version in the official repositories?

I'm new to blender, was trying to render my project, and ran into a bug that appears to be a problem with the blender installed by sudo apt install blender.

Fortunately, the blender website has a more recent version that doesn't have the bug, version 2.92.0. I downloaded the blender-2.92.0-linux64.tar.xz file from their website and extracted it in my home directory and you can run it right from that location. I would like to remove the Blender 2.82 (sub 7) installed by apt and make my system refer to the blender i've downloaded myself such that command line uses the new version. Right now this refers to the old version:

$ blender -v
Blender 2.82 (sub 7)

So my questions are:

1. to remove the old blender (and any vestige of its files), is it sufficient to just sudo apt remove blender?
2. where in my file system should I put the contents of blender-2.92.0-linux64.tar.xz? Is there a standard location for software that you install yourself?
3. Are there any environment variables I need to set? Should I set these in .profile? .bashrc? Or somewhere else?
4. Do I need to create any kind of symbolic link in /usr/bin directory or something like that to point to the new version of blender?

EDIT: some additional information.

Extracting the tar file yields these contents:

$ ls -l blender-2.92.0-linux64
total 238960
drwxrwxr-x 5 jaith jaith      4096 Apr 14 19:56 2.92
-rwxr-xr-x 1 jaith jaith 244635248 Feb 25 01:33 blender
-rw-r--r-- 1 jaith jaith      5589 Jan 13 08:40 blender.desktop
-rwxr-xr-x 1 jaith jaith       713 Jan 13 08:40 blender-softwaregl
-rw-r--r-- 1 jaith jaith      1732 Jan 13 08:40 blender.svg
-rw-r--r-- 1 jaith jaith      3874 Jan 13 08:40 blender-symbolic.svg
-rwxr-xr-x 1 jaith jaith      5340 Jan 13 08:40 blender-thumbnailer.py
-rw-r--r-- 1 jaith jaith      4765 Jan 13 08:40 copyright.txt
drwxrwxr-x 2 jaith jaith      4096 Apr 14 19:56 lib
drwxrwxr-x 2 jaith jaith      4096 Apr 14 19:56 license
-rw-r--r-- 1 jaith jaith      5200 Feb 25 01:31 readme.html

There's the blender executable, the blender.desktop file, with these two entries of special interest because they have no path whatsoever:

Exec=blender %f
Icon=blender

I believe a proper installation should not require any changes to PATH so I think the answer to my question #3 should probably be NO. Path on my machine is currently:

$ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

which does not include /use/share/applications (or /usr/share/applications).

EDIT 2: I would add that the information in the readme.html file that comes with Blender is especially unhelpful:

INSTALLATION Linux: Unpack the archive, then run the Blender executable.

The linux install instructions on the Blender site also look rather unorthodox and incomplete as well.

Short answer - If you are confused by so many options, simply add the PPA (described below) with the following commands, and everything will be automatically taken care of.

sudo add-apt-repository ppa:savoury1/blender
sudo apt update
sudo apt install blender

Long answer

To remove apt version of blender

Use the command

sudo apt purge blender

to remove blender and all its configuration files. Then, you can also run

sudo apt autoremove

to remove the unused dependencies of blender (and also of other apps).

To install the latest version of blender

• Extract the .tar.gz file in your home folder. Rename the new directory to blender. Edit the Exec entry of blender.desktop to Exec=/home/your-username/blender/blender %f, and the Icon entry to Icon=/home/your-username/blender/blender.svg.

Then place the .desktop file in .local/share/applications in your home folder, so that it can be searched in the menu. Alternatively, you can also place it in /usr/share/applications (you will need to have sudo access to do that), if you want all users to access it.

To call blender from command line, you can either copy the blender binary file in the extracted folder, or create a symbolic link to it, at /usr/local/bin/blender.

To create a symbolic link, run the command sudo ln -s /home/your-username/blender/blender /usr/local/bin/blender

You can also place the extracted folder to any other location of your choice. Then you would have to edit the .desktop file accordingly.

• If you prefer traditional package, you can use the unofficial Blender PPA instead.

sudo add-apt-repository ppa:savoury1/blender
sudo apt update
sudo apt install blender

• You can also use the Appimage instead. Download (it is a single file) and double click to run.

• You can also use the snap or flatpak versions

sudo snap install blender

or

flatpak install flathub org.blender.Blender

• There is no need to set any environment variable or symbolic links. If you use the blender-x.tar.gz, you can simply create a .desktop file and save it in .local/share/applications. If you use the PPA, appimage, or snap or flatpak, that would be taken care of automatically.