I'm not sure if this is the right place to ask but if not please advise where may be better.
It's not an ideal situation but I need money and I'm good with computers (actually just got my degree). Friends and family recommended I go to individual's homes and trouble shoot computer problems. Most want to pay me and I need the money so I accept but sometimes the task is very easy. For example a lady wanted me to teach her how to copy photos from her phone onto her computer. However another time someone wanted me to downgrade from Windows 10 to Windows 7 and that was more involved (driver issues etc.)
How much should I charge? Someone suggested I vary the price depending on the level of work required. For example charge $20/hr for easy jobs like teaching someone how to transfer files from phone to computer and $30 for more involved jobs like downgrading OS. Is this a good idea? By the way, these are usually senior people or people who are very uncomfortable using computers that I work with.
I'm thinking of making an ad for my service and not sure what to put for the cost.