I started vaping in November and was lucky enough to find a great APV and juice right off the bat. That helped me a lot to quit and stay off the cigarettes.
The APV is the E-Power 14650 from Hoosier. At 3.7V the protected 14650 Li-ion battery offers a lot a performance and fits a pocket sized device. Charged at 4.15V and recharged at 3.20V. The battery lasts me 1.5 days using the Smoktech single coil 1.7 ohm LR XL carto and two days using the Smoktech single coil 2.0 ohm LR XL cartos. I used to smoke 1.5 packs a day and now go through 2 cartos a day. The stainless XL cartos hold 2 ml (about 60 drops, dry filled) of juice. I refill after vaping about one ml.
The Kamel Wow 24 mg from V4L was the first juice I tried and remains my daily vape. Talk about lucky with juice! I like light flavored juices and have tried several now.
Favorite carto: Smoktech single coil 2.0 ohm LR XL in stainless.
First set-up. Never used the syringe or the bottle of glycerine USP.
Mature set-up now occupies a kitchen shelf. I purchase four additional protected 14650 batteries. I find the Trustfire Blues to be better made, more durable and less expensive ($8 per pair from FocalPrice) than the OEM batts. One month after starting I purchased two more E-Power 14650s from Hoosier inexpensively from parts. That gave me back-up capability. Actually, no parts have failed to date.
Making battery charging easy is part of the success. I have enough 14650 batteries that I can charge a weeks worth of batteries at once on the weekend.
Clustered YL-103A chargers.
Another plus is having a APV that I can use with confidence. I like the safety factor of a single cell APV.