here is a few pointers to know
1. you dont press e to get in vechiles you jump on it
2. everyone can now make vechiles
3.the editor wand is gone
4. make sure to look at the bottom center to change your name
5. never fall for alt f4
6.make sure to do that tutorial, some things have changed you will need to know
7.you can not mod hats and stuff(well you can but not in the way your thinking)
8. make sure to have a look for yourself
9. you dont have to repeatly press to move a brick you can now hold
10. have fun and figure some other stuff out
(if you wonder how i know even tho i wasnt in classic blockland, i dled Rtb 1.045 and tried it out, and thats good for me due to the fact im not known so i dont have to worry about being attack by people wanting me to do stuff)