I own a doublewide manufactured home built in the early 80s, Since we had purchased the home a few months ago 3 specific outlets do not work.

1 ) Hallway bathroom
2 ) Master bath
3 ) Outside near front door

The switches to control the lights that are directly next to all these outlets function properly and always have, I attempted to replace the outlets but there is still no power to any of them. None of the outlets have a Test/Reset button anywhere to check.

I have a outlet tester and verified that the power to the outlet in the master bath should be active, but even after replacing the outlet it will still not run anything plugged into it. The outside and hall bath outlets do not test positive for power.

I would really like to do this on my own as my income is very limited and can not afford to hire anyone.

As soon as you said bath I thought GFCI but you say no outlet has a test button. Not all GFCI protecv6ted circuits will have a test button on the outlet, look at your panel. There may be a GFCI breaker which needs to be reset. Bathrooms usua;lly require GFCI while a bedroom would need an ASrc Fault by today's code. Please come back after checking the panel, a GFCI breaker will have a red test button, usually.