I would like to offer you a couple of links, all connected with violins, violin making and music- created by people who I know personally and which I find are worth a visit.
To be updated regularily!

Orchestras
Junge Süddeutsche Philharmonie Esslingen- prolific project orchestra with a few concerts per year, very friendly group
Sinfonieorchester im Pfaffenwinkel
Christopherus Sinfonie Orchester, CSO, Stuttgarts best non professional orchestra

Violin making
Maestronet- violin makers forum
Royal Academy of Music, London- hosting a fine collection of string instruments, free admission, always worth a visit
Violin making museum in Mittenwald, a collection hosting hostoric instruments made in the area, reopened after a renovation a few years ago
The Strad, monthly magazine for string instrument enthusiasts
British Violin Making Association

Friends and Colleagues
Guy Harrison- Violin maker in Ottawa- Canada
Johannes Blackstein- Violin maker in Berlin- representing my instruments in his shop

Music
Johannes Tonio Kreusch- wonderful guitarist based in Munich- Germany
NPR Tiny Desk Concert- all songs considered, live music for all tastes, various bands famous or not at all do 15min gigs- great stuff, don´t watch only the winner!
Musikhochschule Stuttgart- offering studies of music and art