Just wanted to put my two cents about the tutotials being complicated, you don't have to understand it at one go nor do you need to completly understand it to practice take what little you understood and practice while still trying to understand the concepts that seems complicated.The more you practice and watch/read more it starts to makes sense. Whenever I watch something about new topic it always goes. WTF is this > My brain hurts > Okay it is starting to make sense > I kinda get it and it just keeps on going.

Keep in mind tho this is mostly from my own experience so this is may not apply to you and I am also quite new to drawing so take everything I said with grain of salt.