Ah - a fellow techie 
Bro - dont worry, PROPER investing has methodologies to it, just like research, analysis, design and development. Once developed, deploy, track & tweak / minor upgrades .

If U wish to learn investing (not trading - trading's anothe whole different kettle of fish), look into these areas in sequence:
1. Asset Allocation
2. Stocks, Bonds, REITs/Properties
3. Mutual Funds / Unit Trusts, Equity Funds Vs Bond Funds, Domestic Vs Local Funds

Methodologies /  Approaches
4. Dollar Cost Averaging
5. Value Cost Averaging
6. TwinVest
7. Value investing Vs Growth Investing
8. Trend analysis

That about sums it up in a nutshell.
In addition to the about, learn basic money management, AKA budgetting - telling your $ where to go, what to do and for how long . This is the "fuel" and the 8 things above, the "engine" / system.

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Added on September 1, 2011, 4:00 pm

May i take a stab at this? Please note, just my POV k, no right/wrong yar.

Reducing costs:
Astro - needed? If it's for your retired parents, ok. If it's for U - er.. U got time to watch all those reruns and stuff?
Maxis - whoa, U in the marketing/brand comm/pr/sales line? If not, $250pm is humungous (compared to my $20 to $30pm lar  )
Food - this is purely eating out? How about eating in / tah pau from home? FYI - i'm a voracious eater (ie. 2 plates of food for lunch), thus my eating out cost will nearly kill me if i eat out always + the time to eat out (travelling, parking, stress, heat, etc.) is not too fun either.

Investment allocation
FD: Once U've built about 3 mths to 6 mths living expenses, FD is jus to store ammo for investment.
Thus, er.. why the %? Another POV? Can share?

GIA: General Insurance? Or apa ni? Sorry - blur on the 3 letter word 
If it's insurances - these aren't investment lar, it's for coverage UNLESS U are a multi-millionaire and using insurance to pass on inheritance without taxes and for credit shielding. If so 

CASA: One of the very few four letter words i dont know. Trust me - i swear a lot
What's this ar?

REITs: Bond Funds : Equity Funds
Looks to be 13%: 15% : 10% of your POV

Thus, in pure asset allocation sense, it's:
REITs: 34.21%: Bond Fund: 39.47%: Equity Funds: 26.32%
The above looks quite good by itself.
However, U may want to consider EPF as a type of "bond funds" since its returns & fluctuation is near similar to one.
Thus, if U include your EPF into the "Bond Funds" portion, will your Asset Allocation go totally out of whack based on your personal risk & returns appetite?