STOP!!!!!First find a club, and have an Instructor bubby box with you. If you are having trouble with takeoff landings are harder. The flight sim is good pratice BUTISNOREPLACEMENTFORANINSTRUCTOR!!!!!!!!!!!! use the sim to pratice crosswind takeoffs and landing, flying a left to right pattern, right to left pattern. dead sticks. and level flight.
Also this is right off the NitroPlanes site: <font face="arial, helvetica" size="2"><font face="arial, helvetica" size="2">This is a Brand New In Box, nitro gas powered, radio controlled, Almost-Ready-to-Fly .40 -.63 Cap 232 50 Airplane. It is designed for <span style="color: rgb(255, 0, 0);">intermediate or advanced</span> modeler. </font></font>
I would say get a good high wing trainer like this one.
http://www.hobbico.com/airplanes/hcaa2020.html