It’s simple, follow these people on Twitter and don’t hesitate to ask questions.
EDIT: Now as a Twitter list for easy following!
@marcosalvi
@sehurlburt
@nlguillemot
@DustinHLand
@Donzanoid
@Effyneber
@Nicolas_Lopez_
@ourmachinery
@erin_catto
@Atrix256
@m_strandborg
@JCGT_announce
@RCalocaO
@_kzr
@raegnar
@wadetb
@axelgneiting
@jasminpatry
@matiasgoldberg
@zalbard
@ExUtumno
@TonyAlbrecht
@pigselated
@BrookeHodgman
@dankbaker
@chrisjhebert
@daniel_collin
@JoshuaBarczak
@TobiasBerghoff
@gwihlidal
@baldurk
@fatlimey
@eric_heitz
@bkaradzic
@kenpex
@SebAaltonen
@stramit
@YasinUludag
@dariomanesku
@pthiben
@GraphicsRunner
@JJcoolkl
@jon_valdes
@winterismute
@olanom
@CasualEffects
@cerny
@P_Malin
@hugin84
@mmalex
@maverikou
@KostasAAA
@NIV_Anteru
@casseveritt
@basisspace
@grahamsellers
@TimSweeneyEpic
@PadraicHennessy
@iryoku1
@ChristerEricson
@BrianKaris
@repi
@stevemcauley
@pixelmager
@morgan3d
@self_shadow
@thefranke
@adrianb3000
@MichalDrobot
@MyNameIsMJP
@BartWronsk
@kubacupisz
@robertcupisz
@renderwonk
@inversepixel
@AlexVlachos
@JFStAmour
@Kaplanyan
@MittringMartin
@TangentVector
@FilmicWorlds
@EpicShaders
@pixelmaven
@tobias_persson
@pointinpolygon
@Reedbeta
@wolfgangengel
@EricLengyel
@iquilezles
@JasperBekkers
@simesgreen
@mirror2mask
@YuriyODonnell
@kiwaiii
@AndrewLauritzen
@renderpipeline
@TheFryster
@sjb3d
@ZigguratVertigo
@g_truc
@SebHillaire
@Icare3D
@TimothyLottes
@idSoftwareTiago
@SebLagarde
@_Humus_
@aras_p
@capnramses
@ID_AA_Carmack