There are many user friendly distros where you never have the need to program or use the command line, if you can install windows you can easily install those.
The easiest is knoppix since you do not install anything at all, just put the CD and boot your machine and you will have an OS running, it is not a ful expirience since it is slow but you might get an idea.
If you want to install the OS one of the easiest distros are Mandrake and Lycoris which you can download here Other distros
First I was once quite skilled in windows, yet I still got spyware and viruses, could I have done better? sure but the odds were against me anyhow. Secondly there is no denying that the average windows user is less savy than an average Linux user, those that think that their OS is AOL are tho ones that provide the infrastructure and bait for malware.
Nobody here is claiming that any OS is inmune, however proportionally speaking the numbes do show that windows is far less secure. Even if Linux did command an equal lead that MS currently enjoys I have no doubt it would still be more secure, simply because it is open source. Apache run servers dominate IIS either 3-1 or 2-1. Yet they only have a fraction of the explois.