What are the key pieces of advice for aspiring entrepreneurs starting an IT company according to Thomas Preston-Werner?

According to GitHub co-founder Thomas Preston-Werner, the first essential piece of advice is to start something - anything - and keep iterating on ideas. He emphasizes that success rarely comes from your first attempt, citing his own journey where GitHub was his '17,000th idea' after many failed ventures. Secondly, he stresses building a strong team of co-founders rather than going solo, as most companies fail due to team issues rather than product problems. Having equal partners creates better support systems and dedication. Finally, he highlights Paul Graham's advice to 'build something people want' as fundamental, noting that no amount of marketing can sustain a product nobody desires.