A basic chain of production to use early on which will get your labs going with Red and Green Science, while at the same time provide you with Yellow Belts / Underground Belts / Splitters, Fast inserters, and Ammos. The design is quite compact and is ment to be built early on, straight after electricity and smelters, and should help you progress in the next phase of the game, providing you the main components used at this stage.
All you need to provide is Iron and Bronze Plates in the 2 input belts, I left a pair of constant combinators to tag each belt with the corresponding resource needed. If the system is working at full capacity is capable of handling an input of over 20 iron furnaces, the more the faster it will produce, while 4/6 copper furnaces will be enough.
All you need to research is Automation and Logistic (30 Red in total) to get the chain started on the Red Science production, and eventually Automation 2 (80 Red) will unlock the Assembling Machine 2 required to produce Green Science and the rest of the components. All the fast inserters used in the blueprint can be replaced by normal inserters early on and then eventually upgraded to fast inserters which will be provided by the system itself.
You can make the science production line longer to increase the research speed as you wish, just drag along the 3 belt involved and increase the number of assembly machines and labs
feel free to leave any feedack if you like it or if you find a way to optimize / improve it