Hey there! Great to have you on board. You’ll find tons of info here and loads of lovely helpful people too
Very subjective. Best to get one Original and one New. I love the New and Improved, not keen on the UU personally - but many are. I think if you like sweet-ish stuff then either Vanilla is the best.
Start with one meal a day. 3 scoops, 570ml water. Use these instructions