Learn how to draw or sculpt or both? The main hurdle to starting Blender is it's odd interface, but it's possible to get comfortable in it in anything from a week to a month depending on how quick of a learner you are. The rest is up to your artistic ability.

+1 on the learn to draw/sculpt for non-obvious. A (skilled) 2d artist with no 3d experience will run rings around any beginning/intermediate 3d artist.

The most significant difference between blender and other modelling tools in its heavy use of shortcut keys. Just learn all of the important keys and it should be fine.

How about hands on via a Udemy course? You can usually find coupons to bring the cost down to $10 or so.

https://www.udemy.com/blendertutorial/learn/v4/overview

Learn the shortcuts, talk to people who already know Blender (if you can find any), and when in doubt, RTFM. Then Google.

That should at least get you through the basics. From there... I don't know.