New to excel, love it & want to learn more

Hello, my name is Todd K.
Thanks for letting me join the forum. I'm relativly new to excel & computers in general, though I am getting the hang of it. I started playing with excel to calculate multiple formulas for a home shop machinist hobbie I have. I got hip to excel through a book I read on dividing (such as when making gears). The author recommended using spread sheets & have the computer calculate multiple formulas. I started w/ a simple bore & stroke chart for practice & then went on to calculating x-y co-ordenance for a division plate to make a 127 tooth gear. It took me about 20 min. to set up the formula (it took me hours in the beginning) & about a minute to let the computer calculate 254 calculations. I was hooked. Now excel is a toy (& spent a discusting amount of hours with it). I have fun trying to make simple programs for different calculations. I'm not sure of the limits of excel, & may find out that I want to play with more complex progams in the future. The reason I joined this forum is because I have questions that I can't seem to find answers in excel help or youtube. I was hoping to be able to communicate with knowledgable people that would be able to answer some of my questions. Thank you,
Todd K.