it seems kester 44 is suggested a lot, if I go with that should I use additional flux if so, a tacky one any thoughts on the model number to get from kester if needed?

Kesters 44 is a Flux-Cored Wire, in other words, inside the wire there is already some flux in the core, so normally you would not need to add more if you are going to solder normal pieces such as resistors, capacitors, etc. (the exception to this is if you are going to solder some SMD or similar pieces that are pretty small and/or have many small legs, that in this case it is good to have additional flux).

Basically flux is a paste or liquid that helps the tin to melt properly and make it more workable. It also allows you to work at lower temperatures thus avoiding damage to delicate boards or components. After soldering with flux you have to clean the flux residues with a special product, a flux remover (for example https://www.amazon.com/Chip-Quik-CQNTRM-0-5-Remover-Non-Flammable/dp/B095KX6VQM/), the exception is the No-clean flux.

You have three types:

• Rosin flux: Made from pine resin and containing acids, additives, and solvents, rosin flux is available in both liquid and paste forms.

• Water-soluble flux: It is made from organic materials, and you can use it in areas where you don’t want to leave any residue on the soldered joint. It’s effective in preparing components for soldering.

• No-clean flux: This flux does not need special cleaning after soldering and is helpful in soldering electrical circuits. The flux that remains on the surface after soldering is conductive (so you have to remove the remains).

If you want to buy flux, the type will depend on the work you are going to do, for example: AMTECH NC-559 (SMD soldering work in general), AMTECH LF-4300-TF (BGA soldering work), RMA-233 (BGA, PGA rework and reballing), etc.

Edit: formatting