everyone has their favourite sites mine is everthing liquid thats what i got whe i started quite good value everthing to get you started and 3 concentrates of your choice
http://everythingliquid.co.uk/shop/diy-e-liquid-mixing-kit-bronze-bundle/
theres plenty of others though chefs vapour, alchemists cupboard, vapeable, vampire vape to name a few have a look and see which you fancy.
i get syringes and mixing cylinders from ebay, just beware the cheap cylinders the measurements arent accurate but handy for mixing larger batches.
t-juice and vampire vape concentrates are handy to have as some of the flavours you can just mix, shake and its good to go.
other popular suppliers include flavour art, capella, flavour apprentice/perfumers apprentice (same company i beleive), flavour west, pink spot, lorans
theres loads and most available at chefs vapour.
aslo take a look at the discount code section before you buy there are quite a few codes to get you money off usually around 10%.
empty bottles they're an absolute rip off at some places so beware, but recently found this place very cheap and good service
https://www.ibottles.co.uk/products...t-plastic-ldpe-dropper-bottle-stubby-tip.html you want the LDPE bottles theyre easier
to squeeze your juice out.
ejuicemeup is a good free calculator for your pc to save recipes and has a box for each recipe to add notes.
http://ejuice.breaktru.com/
the potv app for android also a good easy to use calculator.
hope this helps.