If you want to know how to 4-in-1 speedweave there are instructable's already on here..Paul the Mole - European 4-in-1 maille (chainmail) speedweaving
As this is my first Instructable it may be rubbish but hey, we all start somewhere.
To provide (hopefully) clarification on how you add rows.
To share a method I've come up with to make adding rows a little easier.
You have read Paul the Mole's guide and are familiar with creating single or multiple rows of 4-in-1 maille.
Two or more tie wraps/similar.
Cutting implement (you can do without)
Pliers two sets ideally (for bending rings)