2D Drafting in Autocad

I would need to draft in Autocad 2D the 2 + 1 levels little building attached I would need: a site plan b basement and ground plans 1:100 c south and east elevation (project, existing not required) d west elevation (from the available info: east elev, section, plans, concept schematic elev) The plans provided are: 1 partial survey of the building (concept schematic) 2 extension plans where (if) in conflict extension plans prevail The work should be relatively easy only it may require a little bit of merging together the information from the two different sources and making assumptions on the missing dimensions Better quality scans can be made if needed