I just started back myself. I went online to see what fit me and what would give me to grow. You'll want a good chip set along with the ability to vape at low and high ohms. Most have this but not the small pens like an eGo.
Do not get into a mech mod since you're new at vaping. Save that for later.
Make sure you run great batteries and nothing like an Efest. I run only LG browns (18650 30a 3000mah), Sony VT6 or Samsung if need be. 20 amps is great and at bare min of 2500mah will do just fine and will give you plenty of battery run. Some mods come with built in. That's your choice but I rather not anymore. Others stated to learn your Ohms Law, please do since that's your safety net.
Pico or the Iconn (?) 220w will give you a start with room plus easy enough. Smoant Naboo is flashy but a nice mod if you like shiny. You don't have to overthink this at first. Get what is comfortable, expandable to further yourself in any atty and the right nicotine level and you'll stop smoking that day.
I used to go through 1-2 packs a day and started on 12mg, first time around I did 18mg then moved down to a 12mg then 9mg. This time and last. ...12mg with 6mg at night. If you find yourself craving for a smoke while vaping up your nic level. If you feel lightheaded, back down and lower the nic level. Drink plenty of water as well, hydrate!
Save building coils, diy juice for after you get the hang of it.
It's really not hazardous if you start with a regular atty, decent
regulated mod,
quality batteries and don't get ahead of yourself with building until you know the Ohm Law. Don't trust everything the vape shop tells you about the latest and greatest device either. Come to this page and watch plenty of reviews. ...