If you select a system around 650 light years away from your position you will get an in range fuel reading allowing you to make jumps of that distance making things much easier on long hauls.
To get enough money to buy anything you want start at system Lave, sell your hyperdrive, buy a passenger's cabin, get a passenger, and then try to buy a cheaper ship. Frontier has got a bug, the money you'd receive if selling your ship to get a cheaper one is added to your credits, but you never get that cheaper ship because you can't give your ship away if there are passengers onboard. Repeat this often enough and you'll never have money problems during the game.
Go to any spaceport, buy a ton of rubbish (this seems to only work with rubbish), leave the station and then hyperspace to another system (that's for not being fined for illegal dumping). Make sure you are in free flight (you can't dump with the autopilot turned on, and we really are gonna dump something) and accellerating (for not being hit by dumped cargo). Now do the following: Go to your ship's inventory. You see all your cargo, and the last should be a ton of rubbish. You also see the buttons for dumping the Cargo. Look at the rubbish button, imagine there was one more button below that and click right there. You just dumped cargo that you haven't loaded, and your ship gained one ton of space.Do this as often as you want, but be prepared that dumped cargo might damage your ship.
To become ELITE in no time. Buy a mining laser on your front gun mounting and fly to a suitably sixed body i.e Phobos in orbit around Mars. Fire at the moon from a range of about 3km and press the Accelerate time button to the second top setting, whilst holding down fire. Shortly, a message will appear from the Interpol saying "Well done, commander" or some such other thing. Click on the time button again and in a wee while, you will be promoted up one rank! Keep on doing this and you will become a ferocious ELITE warrior in no time! P.S If this one takes a few minutes to tell you the message, don't worry. Also, if the LASER doesn't work on the front, fit it too the back.
Making Frontier run on any screen mode is possible with Frontier2AGA.lha from AmiNet/game/patch/. This patches Frontier to use the same Screenmode base as your frontmost screen. Might even work with graphic boards (not tested).
There also exists a frontier trainer on AmiNet/game/patch/: FrntTrn2.lha. This patch allows you to activate a special cheat mode by pressing the 'DEL'-key. Then you can change many of your ship's attributes, you can even try to fly a thargoid! Having a little falcon with 8000 tons of cargo space, four big plasma guns, any possible equipment, the acceleration of a missile and a size 8 hyperdrive for jump distances over 400 ly is no dream any more.
For all those of you that always wanted to exit Frontier back to Workbench / Shell frontierpatch.lha on AmiNet/game/patch/ is what you've been looking for. This patch allows you to exit Frontier by pressing X in the main screen.
For German Frontier/Elite2 users FrontierGerman.lha on AmiNet/game/patch/ (where else...) fixes some mistakes in the German translation and adds an exit patch which allows you to exit Frontier from the mainscreen back to Shell or Workbench by simply pressing X.
And the last one out there for all those Trekkies playing Frontier: FrnTREK1.1.lha on AmiNet/game/patch/ changes any screen texts to make you feeling Trekked. The Imperium changes to Romulan, Imperial Courier to Warbird and so on.