Starting anew with Paint Tool SAI

*Waves* So, guys. I found a new favorite program! Photoshop was annoying me (though I probably will still play around with it, use it to add effects) but I found a download for SAI,  so I jumped on the bandwagon and started with this. Any tips and tricks and pointers to SAI tutorials would be much appreciated, ya'll. I've been gone for a long time, but it is good to be back! I hope to start posting a lot more art now, especially since I'm taking lots of workshops and doing exercises in school for practice and improvement.