You are pressing Ctl-Space to see the Intellisense aren't you? Press it on a blank line to see the keyword list and work your way in. I find the Intellisense is pretty bl**dy good in the IDE.
1) Entering "Type(" should give you Intellisense for how to do it. It's a two stage process now to get a variable. Declare the type then Dim an instance of it.
2) Logarithm(num, base) replaces Log and Ln
Power(num, base) replaces Sqrt
3, 4) I am sure there will be much better and more integrated graphics to come but it's not really my interest so I haven't looked at what is presently available let alone what Android can do.