I never read any tutorials on how to use it so I can't recommend any :/
Since I am mostly importing SVG into the program, I don't actually need to deal with creating any layers in Synfig. Here are the basics:
Drag the play head to a frame where you want things to change
Turn on animation mode (main canvas bottom right)
Set the interpolation (next to animation mode button). Ease is often a good one
Select a layer to edit (you can select multiple)
Drag the nodes around to move them
Congrats! You just animated those node from frame 0 to wherever your play head is on!
Do keep in mind about some bugs while important Inkscape SVGs:
If you copied some objects from 1 Inkscape file to another, your gradients are likely broken
Clipping doesn't work out of the box. Duplicate the lower layer, group it with the higher layer, set the higher layer's composite method to "Straight Onto"
I first have the animation idea brew in my head for about 2 weeks, so I know exactly what scenes there will be. Then it's just a combination of Inkscape, Synfig Studio and Kdenlive.
For each scene, I first create a static version (i.e. vector art) on Inkscape. Then I import it into Synfig Studio for making vector animation. Finally I put all the snippets together and add sound in Kdenlive.
I don't really watch anime but I want to read Japanese text. I'm currently 2 months in following the Tofugu guide. I spent about a week on memorizing Hiragana and Katakana, and have been grinding Kanjis and vocabularies on Anki since then. At some point I also read the Japanese sentence structure guide from 8020japanese out of curiosity. This combination allows me to learn Japanese much faster at my own rate than pre-designed methods like Duolingo.
Since I'm a native Cantonese speaker, learning Kanji is rather trivial, so I mostly spend my time learning both Onyomi (Chinese pronunciation) and Kunyomi (Japanese pronunciation).
I am at a point where I can read some simple sentences and guess some words base on Kanji (for example はじめる means "start" on my Japanese Wii), but I definitely still have a long way to go before I can do anything fluent. If you watch a decent amount of anime, chances are you can probably learn faster than me.
It feels like most players left except the stronger players, who have often higher ranks. I think you may have a better chance in the Japanese player base in case you are not there already, but that requires some VPN setup and causes additional lag.
CurseForge shares a slice of their ad revenue with creators, so getting money simply depends on how many people visited your page. Even if a mod is unpopular, you still get a minuscule amount of money.
I should mention that you get paid in "points", and these points can be used to redeem money. For example, every 100 points = 5 USD.
I wrote some Minecraft mods and uploaded them to CurseForge. I still get about 5 USD every week. It used to be every 3 to 4 days but I seldomly upload new stuff now. For reference, my projects have 1.6M total downloads combined, 2k weekly.
It's nowhere near enough for sustaining life, but it's like pocket money for me to buy games and renew my domain.
Good brag👍