I'm new to using wordpress.com and am learning what's possible with the various versions (it's a bit confusing but know it'll all come together eventually, your help is appreciated).
My goal: I would like to expand on it to eventually to create an e-commerce site with plugins, etc.
1) In the meantime and before I make that jump, if I upgrade to make it custom, can I then install plugins and build on my Connection Theme site?
2) For the e-commerce goal, what is recommended as far as WordPress.com, WordPress.org, what version, or go with something else all together...
If used WordPress.com, would upgrading it to custom then allow me to install plugins and everything I'd need?
3) Is it secure?