need help installing bz2 or gz files

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http://forums.fedoraforum.org – Hello I am totally new to fedora, recently switched from windows , wanted to try something new something better, well since I do not have any experience with fedora i need help installing softwares i downloaded win rar from rarlab but it is in tar.gz files , i also want to install Blender but that too is in tar,bz2 I extracted them to a folder but their isnt any executable just folders like ever softwares main folder has in Windows ... I hope if anyone can help me install softwares , i will greatly appreciate that... (HowTos)