RE: Please help, was told electric was a good way to go for a beginner
It sounds like the ESC has some problems. It may be worth trying to do the calibration procedure again (ESC calibration, not radio), but it maybe a bad ESC from the start, it does happen.
Unfortunately, and this is not exclusive to Redcat by any means, it applies to almost all RTRs, RTRs are supplied with pretty rubbish electronics, and that includes the servo too. Expect to replace the ESC and servo.
We have a dedicated Redcat forum which I'm going to move your thread to now...I'm sure someone in there will square you away.