Thanks for the info. Indeed I don't want to lose my photos that's why I'm taking all this trouble for backing them up

Get a couple of batteries (SCUD, search this site for where to buy), a separate charger and a travel router. Just in case.

if you are going to be in a different country for a while, then a perepaid or pay-as-you-go sim card with a data allowance may be worth finding and using.

spent several weeks in Asia a couple of month ago:

• Marble + OpenStreetMap + GPS for navigation - way better than Nokia's maps in certain areas - downloaded maps in advance whenever I had the chance to do so (abundance of open WiFis in or near hotels)
• h-e-n to transfer pictures from my camera's SD card to the N900 - in hindsight, should have used an microSD-card + adapter instead (as suggested by other members). However, using h-e-n and a card reader, I was able to easily share some pictures with fellow travelers
• dropbox for remote backup
• spare battery is a must
• about 10 movies for long trips on a bus or train

I find the GPS, with no connections, takes a couple of minutes to establish lock when you turn it on after traveling more than 50 miles or so from the last point you used it. It is very fast at attaining lock if you haven't moved far.

On my last trip to Mexico, I used the n900 just like my netbook. I just used wireless access points. I did everything including video skype, that I did with the netbook. I also watched some of the dvd's I'd loaded on my n900 on the hotel tv's with my composite connector. I couldn't do that with the netbook!

The N900 is an awesome travel companion!

Make absolutely sure you set the auto update time to something like a month or more, or it will eat something like 40 MB of data DAILY only to check for updates..

For photos, I use hen to connect my camera directly (Panasonic, mass storage mode). Not the fastest but no need for card reader.

Never had a problem buying airline tickets or anything else online with the n900 browser.

awesome reponses thanks everyone
I never realized that I dont need the card reader...

you can buy a micro sd card and a sd adapter if your camera supports sd cards you can then plug the micro sd card to your n900 and copy all your valuable photos to it and maybe upload them to the internets. I used it on my excursion at Athtens with school

I just returned from a multi-week trip around Europe, and used the N900 as my sole device while there. A few pointers from that trip:

I found most wifi places worked well, and the stock browser could do just about anything. I have FireFox and Opera installed, but only had to use Opera once the whole trip. Most free wifi sites to have a "terms" thing to click though, and you have to do it each time you connect. Auto-reconnect is not your friend with those... turn it off.

You'll probably want another battery. Copying files, via h-e-n/external reader or to/from the internal tf slot takes a while and sucks battery fast. I usually did backups at the end of the day so that after the copy I could plug it in to charge for the night.

As already noted GPS lock time sucks without AGPS. I wound up getting a pre-paid sim for a few euro without data. I would turn on the GPS when on wifi, and AGPS would place me within a few hundred feet. (I was in major cities though, London, Madrid, Barcelona, etc.)

I would advise to also turn off most repositories while attached via wifi. You can turn them on easily when on wifi again, which then also auto-refreshes the database. Then just in case it does hit the data plan with a check it's far less data with all the repositories turned off. You can also set connectivity to "Always Ask", which is a great setting for traveling.

One final bit on images: You probably want to either exclude the folder you're copying pictures into for backup via trackercfg, or at least tweaking it to only index while on mains power. If not, it adds tons of images to your device and it sucks power at random times to thumbnail them. If you're copying via the internal slot at night when it's plugged in, that's less of an issue. In that case you probably want to force it to index right after the copy by opening the image viewer. Nothing sucks like showing a friend a picture on the N900, and an hour later having a hot brick in your pocket beeping about low power.

Safe travels!