Curious for any other good resources for this Q!
2 Answers
The cost of creation will depends on how many lines, functions and other variables you have in your contract. For the gas cost for executing a contract is 21000 gas plus you need to calculate all the operations you are calling. This is a gas cost table to give you an idea. https://docs.google.com/spreadsheets/d/1n6mRqkBz3iWcOlRem_mO09GtSKEKrAsfO7Frgx18pNU/edit#gid=0
This depends on the contract. Deploying the contract cost gas whicih is a measure of the computational cost, and there is a price per gas called (as you will expect) gas price. The current gas price is about 6 Gwei (0.000000000006 ether).
This tutorial helped me a lot some time ago.
hope this helps
