aco175
Legend
I would recommend not multiclassing and just go with a subclass that has spells like the eldritch knight. You can play an abbreviated game with the PC at 3rd level and try things out to get to experience lower level combat and spells and fiddle a bit with skill checks and saves before getting too many options at higher levels. Ultimately I would rather see starting a new campaign with all the characters at 1st level.
You also could run into the problem with playing a game and the player does not like D&D and does not want to play anymore. Maybe run a one-shot with pregenerated characters over a couple hours to see before getting in too deep.
Starting at the same level as everyone else (9th) works, but the new player might need a lot of help. Most people learn best by doing, so the first night of play might be slower than you want, the next could pick back up again. Spells would be the hardest part to get though so maybe having the spell descriptions printed out will work- like 4e spell cards.
It also depends on the campaign. If I have been running a game for 6 months with my 5 friends and a new player want to try it out, I might not want to stop my normal game. I could make a reason to bring in a new player for a night, or recently in my game I have several henchmen of the players main characters that could go on a lower level adventure and still be part of the campaign. I could make a one-shot for a night of play with the normal players using the henchmen and the new player joining at the lower level of 3-5.
You also could run into the problem with playing a game and the player does not like D&D and does not want to play anymore. Maybe run a one-shot with pregenerated characters over a couple hours to see before getting in too deep.
Starting at the same level as everyone else (9th) works, but the new player might need a lot of help. Most people learn best by doing, so the first night of play might be slower than you want, the next could pick back up again. Spells would be the hardest part to get though so maybe having the spell descriptions printed out will work- like 4e spell cards.
It also depends on the campaign. If I have been running a game for 6 months with my 5 friends and a new player want to try it out, I might not want to stop my normal game. I could make a reason to bring in a new player for a night, or recently in my game I have several henchmen of the players main characters that could go on a lower level adventure and still be part of the campaign. I could make a one-shot for a night of play with the normal players using the henchmen and the new player joining at the lower level of 3-5.