Beginner's guide to investing: the honest version for people who find it confusing and want to start - what do you reckon

[DiamondDallas86]

Most investing guides either talk down to you or assume knowledge you do not have. This one assumes you have never invested anything and have a normal job and a normal income. It starts with the parts that matter most and skips the parts that sound impressive but mostly help people sell you things.

The single most important concept is this: time in the market beats timing the market. The longer your money is invested, the more it benefits from compounding. Compounding means your returns generate their own returns. Starting early matters more than investing large amounts. A hundred pounds a month from age 25 produces significantly more than two hundred pounds a month from age 35, even though the later investor puts in more total money.

The second most important concept is costs. Every investment product has fees. The difference between a 0.1 percent annual fee and a 1.5 percent annual fee sounds small and is not small over thirty years. Index funds track a market index like the FTSE 100 or S&P 500 and charge very low fees because they do not require active management. Actively managed funds charge higher fees and on average perform worse than index funds over long time periods. The data on this is very strong and largely settled.

For most people in the UK the right order of operations is: fill your pension contributions to at least get any employer match (this is free money you are leaving behind if you do not), then consider a Stocks and Shares ISA for additional investing (the gains are tax-free), then taxable accounts if you need more capacity. In the ISA, a low-cost global index fund like a Vanguard LifeStrategy or a simple FTSE All World tracker is a reasonable starting point that most professionals would not fault.

The things that are not worth worrying about as a beginner: individual stock picking, cryptocurrency as a primary investment, timing the market based on news, and anyone selling you a guaranteed return above cash savings rates

[Marnie]

The free money point about employer pension matching is the one I wish someone had told me at 22. I left probably fifteen thousand pounds on the table by not contributing enough in my first job

[Jeffy]

What is the minimum someone should know before opening a Stocks and Shares ISA

[Zero-Point]

That you might not see the money for a long time, that the value goes up and down and that is normal, that you should not invest money you might need in the next five years, and that low cost index funds are the sensible starting point

[JustMartin]

The costs point is so underappreciated. The fee difference compounds just like the returns do. A 1.5 percent annual fee versus 0.1 percent over thirty years is an enormous real difference

[StringTheory97]

Vanguard and iShares are the two names worth knowing for low cost index funds in the UK. Both have straightforward platforms and their fees are genuinely low

[Anchor99]

Is it better to invest a lump sum or spread it out over time

[TomTiz]

Mathematically lump sum beats spreading out on average because markets trend upward over time. Psychologically spreading out, which is called pound cost averaging, is easier because you feel less exposed to bad timing. Both are reasonable. Doing nothing waiting for the perfect moment is the worst option

[Amber_44]

The most common mistake beginners make is checking the value too often and selling when it drops. The drop is the normal. Staying in during drops is the only way to benefit from the recovery

[Mason0]

Monevator is the best UK personal finance resource that is not trying to sell you anything. Their beginner series covers exactly what this thread covers and goes deeper on each point