For the past 10 years I've been working as assistant on multiple projects, some of them for local companies others on Freelancer, Elance and UpWork (former oDesk).
At first most of the tasks I worked on were data entry, sorting and research. Over the years I picked up a lot new skills.
I am a fast learner, so my skills would not be limited to these. I am always eager to learn something new and use that new skill to either pass on the knowledge to someone or use it to help.
Here is my UpWork profile where you can see part of my work history: https://www.upwork.com/o/profiles/users/_~01abaca83ad3a6d08e/