Rather than try and link 4 years of internet searches, I’m going to give you a few of the highlights. These are the sources I return to again and again.
Hurstwic has been a great source of information. Trews, tunics, hats and lots of additional clothing information. The whole site is well worth a look.
Men’s trousers. This site is another treasure trove.
Trim This is the article I read that talked about silks.
Measurements. They are always tricky. This site has the most comprehensive list/chart.
I use a Finnish version of the undertunic. Once again, the best site is here. The pattern is very simple and very adaptable.
This site has a broad range of information.
And then there is the apron dress. To start with, there is this site. My favourite is this one. This site, has the best cutting layout though.
For general pictorial information, Bork Vikinghavn or The Viking Answer Lady