Miscellaneous: Meditate skill stuck at 0

[Sturgeon]

As they said, it's a known thing where meditate will show up as being trainable at lvl 1 but it won't be until level 4 for INT casters and lvl 8 for WIS casters.

AND

For it to skill up on its own you have to spend at least 1 point after lvl4/8 to have it skill while you sit. And no your spellbook does not need to be open for meditate to work.