[u][i]Few tips for farming[/i][/u] - Farming is all about killing as many enemies as possible in the shortest time possible. This is best achieved by doing endless missions such as defense, excavation, and most notably survival. - Nekros' Desecrate ability and Hydroid's Pilfering Tentacles increase the amount of resources you'll receive from dead enemies. - I should explain what rotations are as well. Rotations are 5 minutes in a survival or 5 waves in a defense or a round in an interception mission. Each mission goes AABC. 5 min A rotation, 10 being A, 15 min being B, and 20 min being C. [b][u]Resources[/u][/b] [b]Circuits[/b] - Draco Sector, Ceres. Interception mission. Full 4 rounds gets you between 1200 and 1500 circuits. [b]Mutagen Samples[/b] - Orokin Derelict Survival. Around 5 per 5 minutes. [b]Rubedo[/b] - Larzac Sector, Europa. Dark Sector Defense mission. [b]Nano Spores[/b] - Piscinas Sector, Saturn. Also good for plastids. [b]Gallium[/b] - Titania Assassination, Uranus. Boss has a high drop chance. About one or two per boss kill. Should take less than 5 minutes. [b]Salvage[/b] - Wahiba Sector, Mars. Dark Sector Survival. [b]Morphics[/b] - Wahiba Sector, Mars. Dark Sector Survival. [b]Argon Crystals[/b] - Best place is T3/T4 Survival and Defense. You should note that they decay after 24 hours. [b]Ferrite[/b] - Apollodorus Sector, Mercury. [b]Polymer Bundle[/b] - Assur Sector, Uranus. Dark Sector Defense. Cupid Sector, Uranus. Survival. [b]Oxium[/b] - Only dropped by Oxium Ospreys. Baal Sector, Europa. 150-200 per run. Cerberus Sector, Pluto. Interception. [b]Neural Sensors[/b] - Themisto Assassination, Jupiter. [b]Orokin Cells, Neurodes[/b] - Lephantis Assassination, Orokin Derelict. [b]Plastids[/b] - Ophelia Sector, Uranus. Survival mission. [b][u]Mods[/u][/b] [b]Jagged Edge[/b] - Eligor Sector, Europa. Corpus Defense. They only drop from the elite crewman enemy type. The drop is pretty rare, so it will take a while. [b][u]Other[/u][/b] [b]T3 Keys[/b] - Triton Sector, Neptune. Excavation mission. Easy to solo if you have a good weapon and Frost. [b]T4 Keys[/b] - Hieracon Sector, Pluto. Dark Sector Excavation. Draco Sector, Ceres. Grineer Interception mission. Drops at rotation C. [b]Gold Fusion Cores[/b] - Triton Sector, Neptune. Excavation mission. You get T3 keys as well. [b]Credits[/b] - Seimeni Sector, Ceres. Dark Sector Defense. 20k per 5 waves. Important to note that going higher than 5 waves is a waste of time. You'll get the same amount of credits. Just do 5 waves and extract. Void captures are also good. T1 giving around 10k, T4 between 25k and 40k. They shouldn't take longer than 4 minutes if you're speed running them. [b]Forma[/b] - T2 Survival seems to be the best place for farming forma. Very high chance to get them at rotation A. [b]Experience/Affinity[/b] - Draco Sector, Ceres. Objectively the best place to level up. 4 rounds should max out your gear or at least get you pretty close to doing so. [i]Note: Nothing here is set in stone. These are just the places I've had the best luck farming said resources. If you have a better place for farming certain resources please comment below. [/i]