Write practical for day 1 - session 1

[jbarnoud]

Content:

• [ ] Notebook use
• [ ] Universe loading 101
• [ ] Selections
• [ ] Visualisation with NGL view
• [ ] AtomGroup data access
• [ ] Base classes of MDA (Universe, *Group)

Lead by @fiona-naughton and @micaela-matta

[micaela-matta]

I uploaded a draft notebook, however couldn't make the nbextensions work for me. @fiona-naughton let me know what you think!

[IAlibay]

Closing - uploaded & session finished