Q: Noise Comes Out From My Engine

Greetings,

this is what is going on in my car. When I started my car, there is noise coming from my engine. I believe it comes from the area around timing belt, but I am not sure. This is happened last week. It was fine when I went to my friend's house, but not until when I was trying to go back home. It is weird where I only stayed there about 6 hours and all the sudden it didn't run properly. I stopped driving every since I heard this noise because it doesn't seem to be a good sign for me. Please, if you could, tell me what is going on and what should I do, from your experience.

I am only a study right now. I am not sure if I can afford the repair. Therefore, I really wish to know an estimate price.

Lastly, I am wondering if I select a wrong service, would you guys tell me and do the right service for me and charge for the price of that correct one? Also, I have other concerns in my car. Can I ask the mechanic once he or she arrives to my place?

Thank you

My car has 68000 miles.
My car has a manual transmission.