This has been mentioned several times before. As it stands, when the game loads it seems to reset your skill points to the number you're SUPPOSED to have. The workaround is to enable to skill points cheat BEFORE you load your save. If you do this then your character will have the skill points allotted exactly as they were before you loaded.
You're going to frequently run across those glyph puzzles in the tower. It's essentially Sudoku, but with symbols instead of numbers. You just have to make sure that no symbol appears more than once in a column or row. The easiest way to solve them is to find a column or row that is only missing ONE glyph and just keep flicking through them until you find one that doesn't match the others in that row or column.
So, this method has worked for me to get unlimited resources: When you have multiple of a resource, activate the Mega Credits cheat option. Then sell 2 of any resource to a vendor and then buy a single resource back from them. It's worked every time for me, and you can even do a bunch at time, it's just that the selling of 2 and the buying of 1 resource have to be separate transactions.