So many things in Lynked need money. Crafting, upgrade, fashion, blueprint, and unibot gift (300bit per day). At early game, item that you need to get to sell at Nickel's shop is fruit (all fruit 125bit) and gold (350bit) that you get from mining ore.

To spawn more gold and general QoL, you need to buy 2 upgrade from Buddy tab.

Then you need to buy High Yield from Tehra tab.

Crops (wheat etc) and Flowers is not worthwhile to sell because it cheap, i think their purpose in this game is just for decoration. After you have enough bit you can buy farmable tree from Ivy's shop. All of them priced the same @1000bit per seed. I personally buy 10 tree each type. Sad things is you need to wait 24 hour (game offline time is counted) for the tree to start producing fruit. Now i have 70 tree, 10 of each type that make me rich.
I recommend you to clean your town from tree (ordinary DECORATION tree, not farmable one), stone and bush by stash them in Build Mode. You can "rearrange" original farmable tree side by side so you don't miss one while harvest the fruit. But rearrange original tree or new one from Ivy, give space up/down from each other. Make it wider if you can, this is for 2 reason. One, to make space for you catching bitibot and two, to make easier for you finding bright spot (book quest from unibot).

Your town can be inhabited by max 10 Unibot. I don't know what effect of common, uncommon, rare or legendary unibot so far. I think their purpose for now is friendship point for Wyre upgrade from Chip, plus extra purple orb (soul spark) to buy spark upgrade. You level them up by interact with them daily (in game daily not realtime).
I'm on PC, the button use to manage Unibot is B, Bottom left tab Town manager.
You can see icon for chat daily (40 loyalty), give gift (300bit for 100 loyalty) and Emote (G Button on PC for 10 loyalty). If you done that, icon will have green check. You can click Unibot photo and you can remove them from town to make slot for another or you an locate them on Town. Locate Unibot in town usefull if you want to interact or some other unibot need you to throw other named unibot to water.
Some unibot will give you random mission. For example: catch bitibot (small robot to graple), catch gilibot (fish), throw unibot to water and find a book. To find the book, you can press M and look for shining bright spot rather than run away senseless.
After they reach level 5, they will give you mask. DO NOT REMOVE THEM FROM TOWN YET !!
Do one mission, or wait one more day to do one final interaction with them (blue heart) after mask given for 5 friendship and 50 Soul Spark then you can safely remove them from town.

Heartdrive is needed on so many weapon upgrade, but you only get at least one or two from boss run. I found the best way to farm this megadrive is from Taylor's Squad Leader Mission. Do the quest to farm Heartdrive BUT DO NOT FINISH IT. On last stage before you grab purple orb press esc and choose return to town. You still get the loot (Heartdrive) and do it again for easy upgrade.


If you already done with that quest, you can look for quest at bounty board on Dime. Look for the quest that have miniboss rush option. Save 1 of your mission slot for that quest, and again DO NOT FINISH that quest if you still need it for weapon upgrade. It's easy Heartdrive farming afterall. You can kill the last boss, but do not graple purple orb. Just press esc and return to town.

If you like me, bad reflex but still want to have fun in Lynked, then i recommend to use breacher as first weapon. Breacher hit hard usually small mob die in 1 hit, and first breacher that you craft called Buddy Breacher have very nice special attack. Rocket Jump have BIG AOE and you immune to damage while doing it. Rocket jump can kill medium mob in 1 hit.
If you combine with Smithy mod recharge special attack on KO, at least until level 2 mod for 50% chance you can spam Rocket Jump.
First Upgrade Breacher Master so all Breacher start at level 4 for damage, Final Combo boost for a bit of AoE, then Reach Boost for QoL on basic combo. Explosion Boost for charge attack can be ignored because breacher charge attack damage is pitiful.



Then on Smithy's mod tab, buy Carpet Bomber. Still small damage, but now you can use breacher charge attack to peel 3 armor from armored enemy. DO NOT BUY other mod upgrade so Smithy mod doesn't get bigger. Useless mod = wasted precious re-roll, just like me homing and 4 grenade (enemy too small for all 4 grenade to hit) is useless. And if you can, try not to buy mod on general too for same reason. For example Critical Reinforcement, 15% gain armor on critical hit, while fully upgrade crit hit mod is 15%. 15% of 15% ? Useless.
After you finish all those breacher upgrade, you can farm megadrive to buy all option on Smithy's Field tab. If you still have time, try to farm megadrive to fully upgrade other weapon, because some mission is weapon locked.

Good luck and have fun, afterall this is just recommendation.