I have a few questions

1. What's the best and simplest way to join solid wood? I am using Merbau (commonly found in tropical countries, janka rating about 8-9, class A similar to oak i would think). I've used Meranti to build a garden bench which is stronger but struggled as I don't have the strength to drill the screws in. Nailing was relatively easier but not easy. I've seen some videos on dove tails and glue joins, but building dove tail from wood would be way out of my skillset

2. What's the best legs for solid wood - this is a 2 by 4 ft shelf and a drawer. I'm looking at something high, minimalist and classy hence was thinking of long hairpin legs but not sure if it can sustain the weight. The other iron legs looks boring.

3. Any brand recommendations for nail guns and when do you normally use it ? For plywoods?

4. What are your thoughts on painting above oil laminated MDF kitchen cabinet door. I am trying to see if i can save cost by replacing half and repainting half but not being able to remove the oil and dirt on lamination by scrapping with a sand duster leaves me with uncertainty on how strong the paint will last

5. I saw your tip on table saw and appreciate it. This has been the scariest tool for me hence i have always got the sizes customized from the factories directly.

Many many thanks in advance!