Well on this /r/ everything we talk about is online (because it is translated before yenpress prints it) but here are some suggestions:
LMS: VRMMO about a guy trying to send his sister to college using money made from items in game. (a very good read, something that got a lot of people here into LN's, atm there are 21 volumes translated)
Ark: almost the same as above if you can't get enough.
Coiling Dragon: Linley a six year old is given the task by his father to restore the ailing prestige of his noble house and retrieve their ancient artifact. Based on this dream Linley starts to grow in extraordinary ways. (Very good series with 3-4 chapters coming out a day).
Stellar Transformations: Coiling dragon is the prequill to this series so you can get the idea.
Overlord: kinda like Log Horizon if you have seen it/read it. Guy stays on until the dying day of a VRMMO. The game then gets transformed into his reality.
[Doulou Dalu](): Rebirth LN, thirty year old genius ninja/assassin from ancient china era kills himself to repent for his crimes against his sect. He gets reborn as a baby in a foreign land and is determined to live his life to the best of his abilities.
Joy of life: Another rebirth LN, in his previous life Fan Xian was stuck in bed due to a muscle disorder. When reborn into another world, he is determined to live life to the fullest.
Artifutera: An entire class has been sent to a new continent to help against the encroaching demon forces, Hajime (might be wrong) is the only one with a trash class. Facing ridicule from both this world and his previous one, Hajime is determined to see a change in attitude towards himself.
These are some popular LN's hope you like them