It is a bit risky, but the thing about Android OS is that you can always restore your phone back if you do brick it. It can never be bricked permanently. Goto XDA forums, read the step by step guide and download all the files that are required for rooting. You might also need a PC software for flashing your phone, it will be available on XDA.
Dukan wale are not very lietrate, it's better to do it yourself. I did it myself and trust me, it's not very hard.
After you've done rooting, search XDA for a thread on Increasing internal memory of HTC Explorer. Read that thoroughly, and understand what the steps are.
If you still think you cannot attempt the increasing internal memory hack, just install Titanium backup after rooting. You will then be able to move/remove all bloatware from your phone.
