Reddit mentions of 30 Pcs Double Sided PCB Board Prototype Kit for DIY, 4 Sizes by Paxcoo

I actually didn't tally up the cost as that wasn't really of a concern to me, but I'll try my best to provide links to the things I bought for this. Feel free to add it up for me!

• Lighting
  
  • T-5 Grow light (came with 6500K bulbs)
    
  • 2700K bulbs
    
  • Grow light hangers
    
• Grow medium
  
  • Net Cups
    
  • Black Buckets
    
  • Black lids
    
• Nutrients
  
  • General Hydroponics Flora Series
    
  • General Hydroponics pH control kit
    
  • pH/EC/Temp Meters
    
• Grow tent
  
• Air ventilation
  
  • The only thing I ended up using from this kit was the cheapest part, the ventilation duct...
    
  • The fan from this kit is way too powerful for my setup because my humidifier couldn't keep up
    
  • I didn't use the carbon filter because I'm not growing weed.
    
• Water Distiller
  
• Humidifier
  
  • The cheaper the humidifier, the better. I first bought (and destroyed) one that had some sort of digital switch, so it would always be in the off state when you first supply power to it, meaning you can't turn it on/off with just a relay.
    
• Plumbing
  
  • Aquatec 8852 booster pump
    
  • 2 Gallon accumulator tank
    
  • Pressure relief valve
    
  • Tubing
    
  • Inline Pre-filter (Sorry they must have taken the product down...)
    
  • Misting nozzle T's
    
  • Tube ball valves
    
  • Analog pressure gauge
    
  • Misting Nozzles
    
    • Note that these nozzles are meant for WAY higher pressure systems (~1000psi) and I actually had to take out the spring for them to operate correctly, but they never clogged up, are easy to clean, and worked perfectly for me!
      
• Electronics
  
  • Raspberry Pi 3 kit
    
  • Humidity sensor
    
  • Pressure sensor
    
  • Water solenoid valve
    
  • 5V 4-channel relay module
    
  • Analog-to-digital converter
    
  • 24V to 12V converter
    
  • 24V Power supply
    
  • Resistor kit
    
  • Semiconductor kit
    
  • Circuit boards
    
  • Standoffs
    
• Wiring
  
  • 22 gauge stranded wire
    
  • 22 gauge solid wire
    
  • Power supply cord
    
• Connectors
  
  • Electronic Connectors
    
    • JST-XHP Connectors
      
    • JST-SM Connectors
      
    • Dupont Connectors
      
  • Plumbing Connectors
    
    • Bulkhead connectors
      
    • Quick-connect kit
      
    • NPT to quick-connect connector
      
      I also bought various tools, like crimpers, Dremel kit, drill, etc, but I don't consider those to be project-specific as I'll have them for the foreseeable future. Let me know if there's anything you see that you think I missed!
      

Nice switches.

How many do you have to mount?
1-5: and glue them in.
6-20: buy prototyping boards , solder switches and drill holes to mount them.
20+: design a small pcb with mounting holes and have it made in china.

The first item looks like a good starting point for having a small collection of components and a breadboard to test your circuits. Unfortunately if you are looking to get some practice with soldering you are missing an important piece: the actual circuit board. I also use a lot of Pin Headers in my projects, but I like to make things modular and adaptable, so the headers might not be 100% necessary for everyone.
I have a screen very similar to that, and I never use it, since most of my projects are headless, and I just SSH into my Pis remotely. But people are different, you may get a lot of use out of it.
I would also say that you don't need the anti-static mat. Not to downplay ESD, because it can certainly harm your electronics, but you would be much better served with a wrist-strap that clipped onto your computer case or something else that is grounded in your work area.

amazon starter $20

proto practice boards

practice resistors

Wow, yeah thats super small. That looks like something that has a specific purpose. Check these out.
https://www.amazon.com/Double-Sided-Board-Prototype-Paxcoo/dp/B01N3161JP/ref=sr_1_1_sspa?ie=UTF8&qid=1522698761&sr=8-1-spons&keywords=perfboard&psc=1

EDIT: Found the problem. You searched for "Perf Board". Try "Perfboard". Here is the same thing on the DE amazon.
https://www.amazon.de/Aihasd-Lochrasterplatte-Lochrasterplatine-Leiterplatte-Universal/dp/B00VL1KHJQ/ref=sr_1_4?s=ce-de&ie=UTF8&qid=1522698858&sr=1-4&keywords=PerfBoard