I'm new and interested on mining but I don't know where to start.
You'll have to be more specific than that... There are tons of tutorials on youtube or other helpful sites; just look it up on google.
Basic steps would include the following:
1. Pick a coin you'd like
2. Get a mining rig
3. Download a wallet
4. Find a mining pool
5. Get a mining software for your computer
6. Start mining!
Maybe it would be easier just to buy coins with the money you plan to spend on mining?